ABSOLUTELY NO COMMERCIAL USE OR SOLICITATIONS. VIOLATORS WILL BE AGGRESSIVELY BLACKBALLED.
The Chainguard list is for those who have moved beyond debating vehicular-cycling on our roads as compared to paving America again with separate bicycle facilities. The Chainguard list is for those who believe that bicyclists have the right, should expect, and be prepared to demand, safe accommodation as vehicle operators on EVERY road - the concept known as Vehicular Cycling. Vehicular Cyclists believe that, combined with education and relatively minor enhancements, the operation of bicycles as vehicles on our existing road network is the only realistic and environmentally sound approach which can result in any significant amount of bicycle transportation and recreation cycling in North America.
The ONLY correct topic for posts to the Chainguard list is:
VEHICULAR CYCLING ADVOCACY ISSUES
That's ADVOCACY, with an emphasis on effective methods and ideas.
Those of you who interpreted my question as being vehicle-independent are correct. I was not thinking about anything specific to bicycles. Of course, it is
My understanding (informed by Wikipedia) is that roundabouts and rotaries are very specific and distinct types of what can generally be called traffic circles.
Well, the merges are not true merges of two flows with equal right of way since those merging in from the outside must yield to those already inside. But,
... That's pretty good, but each T intersection has a slow speed diverge and a merge. It is these sequential diverge/merge locations that make a roundabout
Here is an example with partial markings of the type you referred to: http://www.bing.com/maps/?v=2&cp=39.41791904166272~-76.62905260424128&lvl=19&sty=a